This is a systems pharmacology model of the mammalian circadian clock including PF-670462 developed in the paper: Jae Kyoung Kim, Daniel B Forger, Michael Marconi, Douglas Wood, Angela Doran, Travis Wager, Cheng Chang, and Kevin M Walton (2013) "Modeling and validating chronic pharmacological manipulation of circadian rhythms", CPT: Pharmacometrics & Systems Pharmacology. The model is available in the format of Mathematica. This model is largely based on the detailed model of the mammalian circadian clock in the paper: Jae Kyoung Kim and Daniel B. Forger (2012) "A mechanism for robust circadian timekeeping via balanced stoichiometry", Molecular Systems Biology The original model is available from the ModelDB (Access code: 145801).